Record card verifying machine



Oct 28, 1952 E. w. GAIRDINOR ETAL 2,615,333

RECORD CARD VERIFYING MACHINE Filed May 20, 1950 9 Sheets-Sheet l a r: aT120 7 1 T g (0P FIG. I. /05 06 ATTORNEY j Oct. 28, 1952 Filed May z o,1950 E. w. GARDINOR ET AL ,333

RECORD CARD VERIFYING MACHINE 9 Sheets-Sheet 2 FIG. 3.

ELLIOTT W GARDl/VOR RA YMOND E CHENEY LORI! T 5%? BY 3 Oct. 28, 1952 E.w. GARDINOR ET AL 2,615,333

RECORD CARD VERIFYING MACHINE Filed May 20. 1950 9 Shets-Sheev. 5

FIG. 4.

INVENTORS ELL/077' W. GARD/NOR RAYMOND E CHENEY LOR/N T ELEU 1? BY MmATTORNEY Oct. 28, 1952 E. w. GARDINOR ET AL 2,615,333

7 RECORD CARD VERIFYING MACHINE Filed May 20, 1950 9 Sheets-Sheet 4INVENTORS ELL/OTT W. GARD/NOR RA YMO/VD E. CHENEY LUR/N 7.' BLEU RATTORNEY Oct. 28, 1952 E. w. GAIRDINOR ET AL 1 RECORD CARD VERIFYINGMACHINE Filed May 20, 1950 9 Sheets-Sheet 5 SPACE INVENTORS ELL/077' W-GARD/NOR RAYMOND E. CHENEY LORI/V 7T BLEUER BY MAJ-U \W ATTORNEY Oct.28, 1952 E. w. GARDINOR ET AL 1 ,33

. RECORD CARD VERIFYING MACHINE Filed May 20; 1950 9 Sheets-Sheet e FIG.l2.

Patented Oct. 28, 1952 UNITED STATES PATENT. OFFICE RECORD CARDVERIFYING MACHINE Elliott W. Gardinor, Conklin, Raymond E. Cheney,Endicott, and Lorin T. Bleuer, Vestal, N. Y., assignors to InternationalBusiness Machines Corporation, New York, N. Y., a

ration of New York corpo- Application May 20, 1950, Serial No. 163,182

14 Claims.

made-for indicating an error by the illumination of a signal lamp andoperation of an audible si nal, accompanied by retention of the columnin error .at the card sensing position. Further provision-is made toenable the operator to reverify the column in error and, if upon asecond test the column is found to be correctly punched, thecard will'befreed to advance to the next column.

A partlc'ular feature of the present invention provides for the lockingdown of any key beyond that related to a column in error, for a briefperiod of time, where such key operation results from "overkeying duetorapid operation. Provision is made to nullify the efiect of suchoverkeying and to automatically restore the locked key, so that aconsidered selection may be made of the key to-be depressed after theerrordetection.

In practice, an operator keys at a fairly rapid rate so that, where .awrong key is depressed, several additional keys will have been operatedas well, before the operator reacts to the fact that an error has beendetected. This overkeying is of'no consequence as the occurrence of theerror will have immediately disabled the effectiveness 01' theadditional keying. In prior devices, it was necessary to operate aspecial key and then reverify the column in error, but because of suchoverkeying the operator had difficulty in identifying which column wasto be reverified without recourse to the actual columnar position of thecard in the machine, with resultant disruption of rhythmic keying andloss of time.

By locking down the next key operated after an error detection, theoperator is better able to recall the column in error and by providingthis key locking fora brief interval in the order of about two seconds,the previous special key operation can be eliminated, so that upondetection of an error the operator may rekey after a slight delaywithout appreciable change of rhythm and will in addition by observationof the locked key know the columnar location of the error.

, 2 A further object of the invention is to provide improved notchingmechanism for notching the margin of the card in columns containingerror and also forproviding a special notch in a different margin, if noerrors have been detected, so that the latter notch indicates a cardthat has been verified and found to be correct.

A still further object of the invention is to provide a programcontrolled field skipping mechanism which functions to skip the remanderof a field on the card, if an error is found in any column of suchfield, which field comprises a plurality of adjacent columns assigned torecord some particular item of information. When an error occurs in thepunching of any column of the field, the practice is to prepare a newcard. by automatically reproducing all the data on the card except forthe field in error, and such field is then key punched column by columnfrom the original source data. Since such key punching of the entirefield in error is to be repeated, time is saved by not verifying beyondthe point at which a first error in a field is detected. Accordingly,when verifying, the remainder of the field is skipped.

A specific object of the invention is to provide a programming device inthe form of a perfo rated card which may be configured to bring aboutthe automatic skipping, upon error detection, of any selected field orfields of the record card.

Other objects of'the invention will be pointed,

out in th following description and claims and illustrated in theaccompanying drawings, which disclose, by way ofexample, the principleof the invention and the best mode, which has been contemplated, ofapplying that principle.

In the drawings:

Fig. l is a plan elevation of the device showing a card to be verifiedin starting position.

Fig. 2 is a detail section taken on lines 2-2 of Fig. 1 showing theprogram card reading mechanism.

Fig. 3 is a sectional elevation taken on lines 33 of Fig. 1 showing thesensing blade and key controlled comparing mechanism.

Fig. 4 is an end elevation takenon lines 4-4 of Fig. 3.

Fig. 5 is a view looking in the direction of lines 5-5 of Fig. 4 showingthe notching operating mechanism.

Fig. 6 is a detail view of the notching-punch selecting plate taken onlines 6-6 of Fig. 4.

Fig. '7 is a sectional view of the keyboard mechanism showing theessential elements thereof.

Fig. 8 is a section on lines 8-8 of Fig. 1 showing the friction driveand card escapement mechanism.

Fig. 9 is a detail of a one-revolution clutch for the card comparingmechanism.

Fig. 10 is a detail of the key latch interlock device taken on'linesi3-lll of Fig. 7.

Fig. 11 is a detail of the space key controlled contact operatingdevice.

Fig. 12 is a position view of the parts of the comparing device of Fig.3.

Fig. 13 is a position view of the parts of the hey bail mechanism ofFig. 7.

Fig. 14 is a View of a program card.

Fig. 15 is a view of a punched card to be verified.

Fig. 16 is a timing diagram of certain cam operated contacts.

Figs. 17a and 17b placed one above the other constitute a wiring diagramof the electric circuits of the machine.

The several separate mechanical components of the apparatus will firstbe explained, .after which the operation of the machine in the handlingof a specific example will be set forth in connection with the circuitdiagram, at which time the manner of coordination of the severalmechanical units will be pointed out.

The record card Referring to Fig. 15, there is shown a typical recordcard provided with 80 columns of perforation receiving positions, eachcolumn of which is provided with 12 testing positions. The columns maybe grouped into several fields as represented by vertical dividinglines. The record card is designated as It in Figs. 1, 3 and 15, and inorder to verify the perforations this card is placed with its lowermargin in position between the feed roller H and spring pressed pressureroller l2, with column 1 thereof placed one column to the right of thecommon center line between the two rollers.

Automatic mechanism may be provided for advancing the card from a supplyhopper to such position. Such card introducing mechanism forms no partof the present invention, and accordingly it is assumed that the cardmay be inserted manually into the position stated. Automatic mechanismfor feeding the card to a position between rollers, such as H and I2, isshown and claimed in copending application of E. W. Gardinor et al.,Serial No. 103,224, filed July 6, 1949.

The comparing mechanism In line with the common center line of therollers is a row of sensing blades I3 (Figs. 3 and 4), twelve in number,each of which is provided with an opening through which it is hooked toa bell crank l4 pivoted at 15 to a slide [6 suitably guided for verticalreciprocation in a channel plate I1 and biased upwardly by a spring l8.

A U-shaped leaf spring l9 biases bell crank M in a clockwise direction,and the unbalanced weight thereof also serves to hold it in the positionshown. A bail 2D normally engages a shoulder on slide IE to hold it inthe position shown in Fig. 3. This bail is pivoted about a rod 21 and,when rocked counterclockwise to the position of Fig. 12, will enableslide [6 to rise under the influence of its spring l8 carrying with itthe bell crank l4 and sensing blade [3. The upper end of the bladenormally lies just below the lower surface of the card and if, whenelevated, there is no perforation in line therewith, it will strike theunder surface of the card and be restrained thereby against furtherupward movement.

Accordingly, continued upward movement of slide It will cause bell crankM to rock to the position shown in Fig. 12' where the vertical arm ofthe bell crank has rocked beneath a stationary cross bar 22, so thatfurther upward movement of the slide is interrupted and the continuedpressure of spring 18 is transmitted against bar 22. The inertia of bellcrank M will cause it to overthrow, that is, rock in a counterclockwisedirection to an extent that will retract the blade l3 from contact withthe under surface of the card and pressure of spring 18 will hold thebell crank in such overthrown position by pressing the bell cranktightly against bar 22 in its overthrown position. This constructionavoids the possibility of creating an indentation in the card such ashas been occasioned by earlier forms of pin sensing devices, where theload of the actuating spring has been transmitted directly against thecard.

The spring I 9 is not essential, as due to the fact that the greaterpart of the mass of bell crank lever l4 lies to the right of pin R5, thelever is constantly biased clockwise as viewed in Fig. 3, and as theblade [6 rises centrifugal force will increase this bias to hold thelever against a guide rail [9a.

The foregoing sensing mechanism is shown and claimed in the copendingapplication of Raymond E. Cheney, Serial No. 163,061, filed May 19,1950.

Referring now to Fig. 3, there is provided a finger 23 for each slideI5. Each finger 23 is pivoted to a lever 24 at 25 and is biased in aclockwise direction by a spring 25, so that the upper end of the fingeris pressed against a projection [6a of its related slide [6. At itsopposite or left hand end, each lever 24 has pivoted thereto at 2'! aspring urged hook 23 which, when the parts are in the .normal positionof Fig. 3, is engaged and held by the armature 29 of a so-calledinterposer magnet 30. Each magnet 30 is energized under control of averifying key through devices and circuits to be explained hereinafter.

Upon energization of any magnet 30, its armature 29 is attracted torelease its related hook 28 which, under control of its spring 3i willrock clockwise to the position of Fig. 12, so that the hook will engageunder the cross bar of bail 20a and, upon rocking of bails 20, 20a, therelated lever 24 will rock counterclockwise to the position of Fig. 12.In doing so, the finger 23 will be elevated from the position of Fig. 3to that of Fig. 12, which shows the positions of the parts where finger23 has been elevated in response to operation of a particular key, butthe sensing blade l3 related to the perforation position correspondingto that key has not been elevated, so that finger 23 rides upwardly fromthe projection I60, on the slide with an accompanying clockwisemovement.

Extending across the lower edges of all the fingers 23 is a light bail32 pivoted at 33 and biased clockwise by the center blade of a pair ofcontacts 34. 35 which are normally open and closed, respectively. Whenany one of the fingers 23 rocks clockwise, it will shift bail 32 to theposition of Fig. 12 to reverse the condition of the contacts 34, 35.

Where the blade l3 finds a perforation and permits slide I8 to rise,such upward movement is coextensive with the upward movement of thecorresponding finger 23, so that the finger and slide maintain theirrelative relationship with the finger resting against projection 16a,.and rotary movement of the finger is thereby prevented.

momentary energization of the magnet.

Whereja perforation is encountered, resulting mup'wardmovement of slide16 but the correspending lever 23 has not been unlatched for movement,the finger 23'will remain in the posiof Fig. 3 so that projection l6amoves up. allowing finger 23 to rock thereunder and actuate the contactball 32.

Briefly, then, the comparing operation may be summarized by'statingthat, where a blade l3 reads a perforation without accompanying elevaofcorresponding finger 23, the checking or ver if-yin'gbail 32 is'rockedand also, where finger 33"is ele'vated without accompanying elevation ofthe" corresponding blade i3, there is likewise a rocking of the bail toindicate non-conformity,-

between the card position sensed and the verifyi'ng'key depressed. Whereboth are elevated, they iridintain' their relative relationship and thebail 32 is not disturbed. Likewise, where there is no perforation in aposition and the related key is.

not'operated, the parts l6 and 32 remain sub atantially in the relativepositions of Fig. 3 to also avoid operating the verifying bail.

f lnterposer c0ntacts.In.Fig. 3, a bail 36 pivotedat 31 extends acrossthe upper edges of the hooks 23 so that, if any one of them is tripped.

the bail i's rocked slightly clockwise to close a pair of interposercontacts 33.

.Space key.-In Fig. 11 is shown the mechanism controlledby the magnetrelated to the space key. I When this key is operated, magnet :3lisenergized and its armature 23 will release a'sprlng pressed lever 33pivoted onthe bail 20,

Ila-so that,'when this magnet is energized, the lever 33 is released forclockwise rotation to actu :ate ball 36 and close contacts 33.

Card advancing mechanism wQEsoapement-Referring to Figs. ,1, 4 and 8.the

card. feed roller ll whichengages one edge of the card is secured to ashaft 40 which (Fig. 4) has secured thereto a gear 4| and a ratchet 42.The

shaft 43 with gear ,4l and ratchet. 42 secured thereto is biased in acounterclockwisedirection as viewed in Fig. 8 but is restrained by thearmamlumnar spacing of the cardand will accordingly advance the card onecolumn for each The armature 43 of the magnet is connected through a rod45 to a pair of contacts 46 whose purpose will be explained inconnection with the circuit diagram drive-The mechanism for biasing.

trieigsnartiln is the following. In Figs; 1 and a the gearll through anintermediate idler 41 has "connection with a gear 48 secured to a shaft43. Gear 43 has driving connection through an idler gear 43a with a gear43b secured to a shaft 50a. 0n thisshaft is freely mounted a gear 56which .may be. constantly rotated from any suitable source (not shown),-Also mounted on shaft "offer rotation therewith but slidable thereon isadisk 5.] urged toward gear 50 by a blade spring 52, Disks of frictionmaterial are disposed between plate 52 and gear 50 and between the gears53b and 50, so that as gear 50 is constantly rotated, the frictionalbias is imparted to gear 4%] and through gears 43a, 48 and 41transmitted to gear ll and ratchet 42. The keyboard {'rne' keyboardthrough which the interposer magnets" are energized is shown in Fig. 7.

where only the essential elements are disclosed, comprising a pluralityof keys 53, each of which is mounted for vertical reciprocation andthrough a bell crank 54 will draw a slide 55 toward the left. The righthand end of the slide is provided with a hooked end extending into anotch 56 in a latch plate'51 which is pivoted at 58 on a slide 53. Thisslide is normally biased downwardly by a spring 60 but is held in upperposition through the engagement of edge 61 of latch 51 with a stationarycross bar 62. The normal position of the parts is shown in Fig. 7, andupon depression of one of the keys its related slide 55 will be drawntoward the left carrying the upper end of the related latch 51 therewith(see Fig. 13). This unhooks the latch from bar 62 and spring 60 willthereupon force its slide 53 downwardly to close a related pair ofcontacts 63. The space key 538 has a similar set of connections tooperate a related slide 53 and contacts 63.

The contacts 63, as will be explained in con- I restoring magnet which,when energized, will rock its armature 65 pivoted at 66 to force a bentplate 68 upwardly against an arm of latch 51 to elevate the latch andits related slide 59, at the same time effecting a clockwise rocking ofthe latch to cause it to reengage the stationary bar Upon deenergizationof the magnet, the latch 51 will drop down on the barand slide 55will-hook over the latch, if the key has been released. p

Lying adjacent the left hand edges of latches 51 (Figs. 7 and 10) is arow of interlock disks 63 spaced so that only one latch may be in rockedposition at any one time and, where a latch is so rocked and dropped asin Fig. 13, it will be noted that as long as the latch remains down, noother key can be operated and the key-related to the tripped latch isalso. looked down, because the right hand .end of its slide 55 is heldagainst movement toward the right-by the upstanding extremity of thelatch.

The armature 65 of magnet 64 is provided with an extension 10 (Fig. 7)through which a pair of contacts 1! are opened whenever the magnet isenergized.

Verifying blade operating mechanism Referring'to Figs. 3 and 4, the bail20, 20a is provided with a cam follower roller 13 which cooperates witha cam 14 on shaft 15 to rock the bails. This shaft is driven through awell known form of coil spring clutch shown in Fig. 9. -On the shaftthere is freely mounted a pulley 16 which is'constantly driven from anysuitable source of power. This pulley has a hub 11 extending within theconvolutions of a coil spring 18. Secured to shaft 15 is a stop cam 19(see also Fig. 8) and extending between pulley 16 and the stop cam isthe spring 18. One end of the spring is fastened to the stop cam and theother end is fastened to a sleeve 80. The sleeve is provided with a stop8| which engages armature 82 of a magnet 83 while cam 19 has a stoppingedge engaging against a pivoted lever 85, which is urged toward thearmature 62 by a spring 86.

The parts vjust described constitute a well known form of one revolutionclutchv and, with the parts in normal position with both stops 8| and 19engaging their respective levers, the spring 18 is heldin slightly openposition, so that the hub of pulley 16 may rotate freely within thespring. Upon energization of magnet 83,

armature 82 releases stop SI whereupon spring I8 will tend to close,rocking sleeve 80 and will grip the hub of. the pulley, so that thespring will be driven thereby, and through its connection with the stopcam. I9 will drive shaft I5. If magnet 83 is deenergized beforecompletion of a revolution,'the stop 8| will reengage the armature 82 toopen the spring. The driven parts will overthrow slightly, so that camI9 will reengage lever "85 preventing reclosure of the coil spring.

Thus, when shaft I5 is given one revolution, bails 20, 20a will rockandat such time the elevation of sensing blades I3 will occur. Secured toshaft I5 are several contact operating-cams diagrammatically shown onthe circuit diagram and their timing is shown in Fig. 16.

Card notching mechanism pressed, it will cut'a circular notch 92 or 93in the edge (see Fig. 15). The two punches are interconnected by meansof an offset lever 94 pivoted at 95 to a lever 96 which may be rockedabout a fixed pivot 97 by lowering of a link 09 connected to one endthereof. I

The interposer plate 98 configured as shown in Fig. 6 is normally heldin the position shown by a spring 00, so that an edge of the plate isheld under a shouldered upper portion of punch 9|. With the parts insuch position, downward movement of link 89 will rock arm 96 clockwiseas viewed in Fig. 4, moving pin 95 downward. Since punch 9| is blockedby interposer plate 98 against accompanying movement, lever 94 will begiven a clockwise movement to depress punch 90 against the card.

Solenoid I when energized will shift interposer plate 93 toward theright through a bell crank lever IOI. This movement will release punchBI and will cause another edge of the plate to slide under the uppershouldered portion of punch 00. With solenoid I00 energized to holdtheplate in shifted position, the downward movement of link 80 will rocklever 96, but since punch 00 is .now locked. against movement the arm 94will rock slightly counterclockwise as its pivot pin 95 descends tooperate the punch 9|.

The punch 30 may be operated with any column of the card in sensingposition, while punch SI'will only be operated with the card in socalledlast column position, provided that the error punch 90 has not beenoperated during the verifying operations.

The mechanism for reciprocating link 89 is shown in Fig. 5, where shaftI carries a cam I02 thereon, which cooperates with a follower roller I03of a lever having three arms designated I03a, I032), I030. The last ofthese is connected to the link 89. The lever mm is normally urged in acounterclockwise direction through spring I04 extending to a followerarm I05 whose roller rides on a concentric disk I06. Rod 2| upon whichlever I03a is pivoted has also pivoted thereto a lever I08 between whichan arm I03b is a block I 00 carried by the armature IIO of .a

notch controlling magnet III. The arm I00 is normally held in theposition shown through a link connection H2 with an eccentric M3 onshaft 75. With this arrangement, the force of spring I04 against armsI03!) and I03a is transmitted through the block I09 against arm I00, sothat the load thereof is not borne by the relatively light armature IIO.

As long as magnet III remains deenergized, the parts remain insubstantially the position shown and link 89 is not operated. Uponenergization of the magnet, block I09 is rocked out of position betweenarms M31) and I00, so that the former may follow the contour of cam I02and operate link 89.

When it is operated, the lower edge of arm I030 engages a post M4 tocause opening of a pair of contacts I I9. A spring pressed latch IIIwill thereupon engage and hold the contacts in open position untilmanually released.

Located beneath link 89 (Fig. 5) is a pairof contacts I48 which closewhen the link descends and open again when it rises.

The bell crank I M (Fig. 4) when operated closes a pair of contacts I00awhen solenoid I00 is energized.

Program card In Figs. 1 and 2, the program card IOP is secured to theperiphery of a drum I secured to shaft 49 which is geared to the cardfeed roller II and, therefore, advances step by step there,- with.Riding on the surface of the card in line with the 11 hole punchpositions is a star wheel I2I pivoted on a lever I22. When a holearrives at the wheel, the nearest tooth rolls into the hole, loweringthe pivot of the Wheel and enabling lever I22 to rock counterclockwiseas viewed in Fig. 2 under the tension of the lower blade of a pair ofcontacts I. The contacts accordingly close and, where there is asuccession of holes, the wheel I2I will roll from one to the otherwithout shifting the lever I22, so that the contacts I41 will remainclosed for the duration of such succession of holes.

The relationship between cards I0 and IOP is such that wheel I2I sensesa card column of card IOP one step or column before the correspondingcolumn of card I0 arrives at its sensing blade I3. Thus, if for examplethere is an 11 hole in column 1 of card IOP, a tooth of wheel 2I2 willhave rocked into such hole when column 1 of card I0 is one step awayfrom the row of blades I3.

In Fig. 7, a bail I23 is arranged to be rocked by a cam surface on eachslide 59 to close a pair of contacts I whenever a slide is lowered andto remain closed until the slide is restored upwardly.

Circuit diagram .Assume that a record card I0 perforated as shown inFig. 15 is to be verified. The card is placed face up between the feedroller II and pressure roller I2 as indicated in Figs. 1 and 3, so thatcolumn 1 is one columnar space to the right of the center line throughthe two rollers.

It may be mentioned at this point that the operation of advancing thecard step by step under control of the verifier differs from theoperation of previous machines, .in that the normal starting position iswith the column to be verified one space away from the sensing positionand that, when a key is operated, the machine first goes through astepping or spacing operation to bring the column of the card up to thesensing position. If the column is correct, the devices are conditionedto permit another spacing operation when the key for the next column isoperated. In other words, the operation calls for a space operationbefore a sensing operation as distinguished from prior machines, wherethe sensing operation was followed by a space operation.

Referring to Fig. 17a, current is supplied from a suitable sourcethrough main line switch, I30 to a full wave rectifier generallydesignated I3I from which a plus line carrying 130 volts extends, and isdesignated I32. The negative or zero voltage line is designated I33. Themotor I34 is wired directly across the supply lines and is therefore inconstant operation, when switch I38 is closed. The primary of atransformer I35 is also wired directly across the line, and itssecondary winding serves to provide current for filaments I36 of thetubes employed in the circuits. From the transformer a tube bias line of-49 volts. designated I31, extends to the bias resistors I38 of theseveraltubes designated with the pigefix T, such as T2, TI, T3, T1, T4,TI! and T As a preliminary, a relay designated R4 (Fig. 17b) isenergized through closure of key operated start contacts I6I, whichcomplete a circuit through the pickup winding of the relay from line I33to line I32. This relay has a holding winding designated H, and upon itsenergization will close its contacts R4a to provide a holding circuitfrom line I32, the H winding of relay R4, contacts R411 and normallyclosed cam operated contacts P4 to line I33.

In the circuit diagram,:the relays shown are generally of thetwo-Winding type having a pickup winding which is designated P and aholding winding designated H. For simplicity in wiring arrangement,these windings are shown at different points in the circuit, butsuitably designated for identification as P or H. The contacts operatedby the relays are also shown non-adiacent thereto for simplicity ofwiring arrangement, and to assist in identifying the contacts the relaysare shown dotted adjacent to the contacts they, control and the contactsthemselves are identified by the same reference character as the. relayfollowed by a lower case letter. Thus, a relay R4 controls contacts R4a,relay R31 controls contacts R3111, R311), and so on.

, From Fig. 15, it is noted that column 1 of the card I8 contains aperforation in the 4 position and, if the operator now depresses the 4key 53 (Fig. 'l), the related slide 53 is released and the correspondingcontacts 63 will be closed, completing a. circuit in Fig. 17b extendingfrom line I33, through relay contacts R3Ig, cam contacts P6 to thenormally closed keyboard restoring magnet contacts II, the 4 contacts63, to the 4 interposer magnet 38 and line I32. As explained inconnection with the mechanical description, this'will result in trippingof the related hook 28 (Fig. 12). for engagement with bail a. As alsoexplained, tripping of any hook 28 will rock the interposer bail 36 andcause closure of interposer contacts 38.

These contacts (shown in Fig. 17a) will complete a circuit from lineI33, through the contacts 38, contacts R4b (now shifted because of theprior energization of relay R4), a pair of contacts R3Ia, down throughwire I48, contacts R8411 (in normal position), contacts Ra (in normalposition), contacts -R22a (innormal po- 10 sition) to the grid of tubeT3, thus short circuiting the related bias resistor I38 and causin thetube to become conductive. The plate of this tube is connected to theescape magnet 44 whose other sideis connected through wire I4I to camcontacts PI and thence to line I32.

Escape magnet 44 will operate to advance the card one step, to bring itsfirst punched column beneath the row of sensing blades I3, and uponenergization magnet 44 will also close its related contacts 46, whichshort circuit the bias resistor I38 of tube TI, so that it becomesconductive to energize relay R22, through wire HI and the cam contactsPI. Thisrelay will thereupon open its contacts R22a in the grid circuitof tube T3, causing deenergization of the escape magnet 44 before thecard has advanced more than a single column or step.

Relay R22 also closes its contacts R22b (Fig. 170.), completing acircuit from line I33, through contacts R221) and wire I42 to the gridof tube Tl, rendering it conductive so that the read clutch magnet 83 inthe plate circuit thereof will be energized through wire HI and contactsPI. This will result in tripping of the one-revolution clutch causingshaft I5 of Fig. 3 to make a single revolution during which the bails20, 28a are oscillated.

As explained in the mechanical description,

and in accordance with the example wherein a 4 perforation is present incolumn 1, the 4 blade I 3 will rise through such perforation, and the 4finger 23 will also rise, with the finger and related slide I6maintaining their normal relationship. In all other positions, theblades I3 are blocked against upward movement by the imperforate portionof the card, and the related fingers 23 will also remain in their loweror home position, so that in no position will there b arocked finger 23,and as a result the contact bail 32 remains undisturbed and the contacts34, 35 remain in normal position. During this revolution of shaft I5,the contacts controlled by the cams prefixed P make one revolution inaccordance with the timing shown in Fig. 16, from which it will be notedthat immediately upon commencement of the revolution contacts PI open tobreak the holding circuit for relay R22, the escape magnet 44, and theread clutch magnet 83. v

When the interposer contacts 38 closed, a further circuit was completedfrom line I33, through contacts 38 (Fig. 17a), contacts R4b (shifted)contacts R3Ia, contacts R250, to the grid of tube. T2, rendering itconductive and throughits plate circuit causing energization of thekeyboard restore magnet 64, to thereby restore the tripped slide 59 toits initial position and permit opening of the contacts 63 through theirown resiliency for the test period as indicated in Fig, 16, and in Fig.17b the closure of contacts P5 as anincident to the operation of shaft15 will complete a circuit from line I33, contacts P5, contacts R5a innormal position, normally closed verifier contacts 35 to relay R4, whichwill establish its hold circuit through contacts P4 as before. It may bementioned that prior to the closure of contacts P5, contacts P4 open todrop out the holding circuit for relay R4, and that thereafter thisrelay is picked up again automatically through contacts P5, so that atthis point in the operation column. 2 is in readiness to be advanced,forchecking but waits one step away from the reading position.

From Fig. 15 is is noted that this column 2 containsa perforation in the8 position and, if the operator now depresses the 8 key 53, the samesequence of operations is repeated, that is, escape magnet 44 isenergized to advance column 2 into reading position, and then the readclutch magnet 83 is energized to effect a comparison between the holearrangement incolumn 2 and the key setting. If there is coincidence,relay R4 is reenergized through contacts P5 and 35, and conditions areset up for the next step.

Assumenow that for column 3, in which there is a 6 perforation, theoperator has pressed a different key 53. As a result of this, theprocedure will follow in the same manner as though a correct key hadbeen depressed with the exception that, when bail 20 now rocks, two ofthe fingers 23 will rock and actuate the verify bail 32 to shiftcontacts 34 and 35. As a result, when contacts P5 (Fig. 171)) closeduring the reading cycle, the-circuit will not be reestablished to relayR4- and instead there will be a circuit traceable from line I33,contacts P5, contacts R5a, the contacts 34 (now closed), contacts R341)to pickup winding P of relay RBI, and to line I32. Relay R31 isidentified as the first error relay. It will close its contacts R3Ih tocomplete a holding circuit through its P winding and contacts R34h,which will thus hold until relay R34 becomes energized after a period ofautomatic delay.

Relay R3I shiftsa pair of contacts R3 Ic in Fig. J

17ato connect the grid of tube TII, which is normally connected to thebias resistor I38 and biased at 49 volts to the +130 volt source,through a 220,000-ohm resistor I43. The potential of'-'the grid of tubeTII will raise slowly to about lvolts because the condenser I44 acrossresistor I38 has to charge up through the high resistor I43. At the endof approximately 2 secondsithe tube TII conducts and relay R34 will beenergized through the plate circuit to open its contacts R3471. (Fig.17b) and deenergize relay R3I. Relay R34 closes its contacts R346 (Fig.171)) to provide aholding circuit through contactsP'I, sothat relay R34will remain energized until the next read cycle takes place.

Reviewing briefly, depression of the key will first cause energizationof escape magnet 44 to advance the card, energization of relay R22 andenergization of read clutch magnet 83. The keyboard restore magnet '64will also be energized to restore the key and, if during the ensuingtest period an error is detected, relay R3I is ener gized and will beheld until relay R34 becomes energized after the delay period.

In' Fig. 17b relay R31 closes a pair of contacts R313, completing acircuit from line I33, contacts-"P4, contacts R220, R3'Ie, and the lampI44 to line I32. A parallel circuit also extends from R 3-*Ie, throughcontacts-R3411, to an audible buzzer represented by a magnet I45 to lineI32. It is thus seen that, immediately upon cccurr'ence of anerrorindicated by energization of relay R3I, lamp I 44 is lighted and buzzerI45 is sounded. After the delay period, relay R34 will be energized asexplained to open its contacts 'R34d to disconnect the buzzer without,however, disturbing the circuit through the lamp I44. Itcloses contacts-R34g to shunt contacts R3Ie (which now open) and thereby maintain. thelamp circuit. 7 Y

The operator thus receives a short audible signal and a continuedvisible one to indicate that an error or rather a disagreement hasoccurred in the column tested. At this point the operator is givenasecond opportunity to check the same column, in the event that theperforation is correctly located in the card but that the wrong key wasdepressed. Since the column 'in question is now at the reading blades,the preliminary space operation must be omitted. This is brought aboutas follows.

The operator now depresses another key, resulting in the closure of theinterposer contacts 38, through contacts R4b (in their unoperatedposition), and through wire I42 directly to the grid of tube T! toenergize the read clutch magnet 83, and the shaft I5 goes through acycle of operations without the preceding escapement ac tion.

The contacts R34a which are now shifted will cause the circuit to branchupwardly from wire I42, through wire I43, contacts R2541 to the grid oftube T2 to energize the keyboard restore magnet 64 for normalrestoration of the operated key.

If on this second attempt the key depressed corresponds to the holeposition, the verify contacts 34, 35 remain in their normal positionand, when contacts P5 close during the read cycle, relay R4 will bereenergized. From this point the operations continue as though theoperator had pressed the correct key in the first instance.

If upon a second try a wrong key is again operated, the verify contacts34, 35 will be in shifted position when contacts P5 close, and relay R34which is held energized by contacts P! (see Fig. 16) through this periodwill direct a circuit from line I33, through contacts P5, contacts R5a,contacts 34 now closed, contacts R341) (shifted) tothe pickup winding ofrelay R31 and line I32. From the time chart (Fig. 16) it is seen thatcon tacts P! are closed during the period that contacts P5 close and,therefore, hold relay R34 energized after contacts P4 have opened todrop out the other relays that are held through such contacts. I

Relay R31 will close its contacts R3la (Fig.

171)) to provide a hold circuit through reclosed' contacts P4 and willalso close a pair of contacts R3'Ib to energize relay R5, which throughits contacts R51) will hold through contacts P1. Thenotch control magnetIII is wired in parallel with relay R5, so that it is ener zed Con urretly therewith and will now free the notching mechanism for operation onthe next operation of the shaft I5. Such operation is now brought aboutas follows.

Relay R5 closes a pair of contacts R50 (Fig. 1711') which complete acircuit directly from line I33, contacts R50, wire I42, to the grid oftube Tl, resulting in energization of the read clutch magnet 83, so thatshaft I5 now makes a revolution, and rod 89 (Figs. 4 and 5) will bedrawn downwardly to operate punch 90 to notch the upper edge of the cardIS in the column in which the error was located. As an incident to theoperation of the notching device, contacts II9 (Fig. 171)) open andbecome latched in such position for the purpose to be explained inconnection with the last column reading operation, and will remainclosed until manually opened after the card has passed through themachine.

During this notching cycle, contacts PI. open to deenergize relay R5 andcontacts P4 open to deenergize realy R31 and magnet I I I, and at the;completion thereof the circuit conditions are the same as at thecommencement of operations with the exception that contacts I I5 arelatched open. I

The operations as thus far explained will con- L13 tinuethroughoutthe'remainderot the card, that 15, the numeric keys may beoperated or the key 538 may alsobe operated to close contacts 33 (Fig.17b), any one of which keys will close the interposer contacts 38 andeffect a space operation followed by a reading cycle. It is ap parentthat, when the space key is operated, if there-is a hole present in thecolumn, there will be non-conformity between one of the slides IE andone of the fingers 23, and an errorwill be denoted. f

Ultimately, the. card arrives in the last column position, that is, theposition in which the 80th column has been advanced to the readingblades and. the perforations in that column verified. Wilthv the'card inthis. last column position, a

,palr'of so-called lastcolumn contacts I45 are closed-by a wellknowncard lever or similar deyice' mot shown), and acircuit is completedfronrline I33,'.contacts P4 v(Fig. 171)), contacts R220 in-normalposition, contacts I45, the notching latch contacts! and last columnnotch solenoid I to line I32. This circuit'is only completed if contactsH9 havenot been opened latched open as a result of anerror duringtheverifying operationsr. I

waif there is nov error,.solenoid I00 is energized as explained and willbring about an additional cycle for the purpose of effecting a notch 93in the right hand edge of the card. .As explained in the mechanicaldescription, solenoid I00 ahifts'the interposer plate so that operationof link 33 will cause operation of punch 3I instead of-punch30. Thesolenoidl00 closes its related contacts I00a, completing a circuit fromcontacts P4 (Fig. 17b) to the notch control relay I I I and inparallel'therewith relay R5. These, as explained before, will energize the readclutch magnet 83 directly through contacts R5c, so that during theensuing cycle the parts are operated to nunchthe notch 33. v Fig.17a,'relay R5 when energized, closes contacts R511 to energize thekeyboard restore magnet 64, so that, during the extra cycles callin forthe-notching operations the magnet 64 will hold aany'latch 51 (Fig.7),:from being reclosed. During such. extra cyclesuthe verifying bails20, Ila-operate and slides I6 may rise and, as a result, the verifyingcontacts 34, 35 mayshift. To negative the effect of. this. a pair ofcontacts Ric (Fig. 17b) shifts to open the circuit from contacts P5 tothe verify contacts 34, 35 and connect P5 to the relay R4 directly.-

.If the operator "overkeys upon occurrence of an error, that is,operates another key or keys beyond the one which-caused the errorindication, the delay device provides for rendering such overkeyingineffective, provided it occurs within the delay period;

Theflrst keyjoperated after an error will be ineffective but will belocked down and as a result will prevent depression of any further keysso that. if the v operator run'sover the column in error by more thanone key of operation, the locked key will serve as an indication of theplace uming that ,this occurs, the relay R3I will have been energizedbefore such additional key can become-effective,- so that the conditionis one where the extra key operation occurs while relay R3I is inenergized condition. Relay R3I opens apair of contacts R3lg-(Fig. 17b)to prevent ocmpletionof any circuits to interposer magnets b the-extrake o e a i and the o cts 14 P6 in series therewith also prevent suchcircuits during the first half of any read cycle.

Since magnets 30 cannot be energized, the interposer contacts 38 willnot be closed and no circuit can be completed to the restore magnet 64.From the mechanical explanation, it is seen, therefore, that the firstextra key will be locked down and no further extra keys can be depressedbecause of the disk interlock between adjacent keyboard latches. V

At the end of the delay period, relay R34 becomes energized as explainedand breaks the holding circuit for relay R3I. Contacts P6 will havereclosed so that with the extra key depressed and contacts R3lg (Fig.179) reclosed, the intenposer magnets 30 couldreceive current. This isprevented by the provision of a circuit in Fig. 17a extending from lineI33, through common contacts I50 (closed if akeyis in operated posi-'-tion), contacts R3If to the grid of tube T3 to energize the holdingwinding H of relay R3I. Thus, even though relay R34 is energized andbreaks one holding circuit of relay R3I, this additional hold circuitwill maintain the relay R3I in energized condition.

Also, upon energization of relay R34 there is a circuit from line I33,through contacts I50,

contacts R34f and wire I5I to grid of tube T2 to energize the keyboardrestore magnet, resulting in reopening of contacts I50 and any closedcontacts 33. Contacts 63 and I50 open substantially concurrently and,with a slight delay in full deenergization of relay R3I, its contactsR3lg (Fig. 17b) will not reclose until contacts 63 arefullyreopened, andany inadvertent energization of magnets 30 is avoided. In Fig. 17b,closure of contacts R349 will keep lamp I44 lighted until the nextfollowing read cycle when contacts P4 open. When contacts P4 again closeduring this following read cycle '(see Fig. 16) the lamp I44 will tendto be lighted again momentarily, but contacts P'I open virtuallyimmediately to deenergize the holding circuit of relay R34, thus openingcontacts R349 and maintaining lamp I44 deenergized.

Field skipping For the purpose of incorporating the feature of fieldskipping, there is provided the program card MP of Fig. 14 which has itscolumns advanced to pass a contact station as corresponding columns incard I0 are one step away from the related reading station, asexplained. In fields which are to be skipped upon detection of an errorin any column thereof, there is provided a hole in the II position forall columns of the field except the first. Thus, for example, where afielddesignated A of card I0 is to be field skipped, the correspondingfield AP of card IOP has perforations in all columns of the II positionsexcept the first or column 34.

Now, when column 34 of card I0 is one column away from reading bladesI3, the unperforated column 34 of card |0P will be at the sensing wheell2l. Upon operationof a verify key, the

.two cards move together, column 34 of card A escaping into readingposition, where it is read as explained hereinabove. If perforations arecorrect, the operator may proceed to verify the next column. Upondetection of an error which, as explained, results in delay andopportunity for a repeat operation, and if upon such repeat operationthe error persists, the notch control solenoid or magnet III isenergized along with relay-R5, which causes the additional notchingcycle of shaft. I5.v The magnet HI will cause closure of notchingcontact M8 (Fig 5) as explained, which will complete a circuit. fromline I33 to the grid of tube. T4 to energize skip relay R25, which willclose. its contacts R251) and hold through the program contacts Ml, thecircuit extending from line 133 to the contacts I41, contacts R251) tothe grid of tubeTd.

Relay R25 will also shift its contacts. 325a to pick up the escapementmagnet. 44, this circuit extending from contactsR25b, through contactsR2-5a. (now shifted), contacts R2211: to the grid of tube T3. The.contacts [41 remain closed across the series of 11 holes, so that theescape magnet 44 remains continuously energized until the next column,in which no 11 hole is present, arrives in the reading position, atwhich point contacts I41 are opened and magnet deenergized to interruptthe card after the. field containing the error has been spaced orskipped.

. From this point on, verifying may be continued as before and, if asubsequent error is detected inanother field for which there isll-holepunching in card IOP, the column in error will beautomaticallynotched and the remainder of the field skipped. I

While there have been shown and described and pointed out thefundamental novel features of the invention as applied to a singlemodification, it will. beunderstood that various omissions andsubstitutions and changes in the form and details of the deviceillustrated and in its operation may be made by those skilled in the artwithout departing from the spirit of the invention. It is the intention,therefore, to be limited only as indicated by the scope of the followingclaims.

What is claimed is:

'1. In a record cardverifying machine'means for reading a column of arecord card for perforations in index pohit positions therein, a.plurality of keys, one for each indexipoint position, a set of normallyaligned reading elements, one for each position, means controlled. bysaid reading means to cause an element or elements'related to aperforated position or positions to move out of alignment, a set ofnormally aligned key elements, one for each key, each in engagement witha related reading element, and said key elements and said readingelements being movable along parallel paths, means controlled by thekeys to cause a key element or elements related to an operated key orkeysto move out of alignment, and indicating means jointly controlled bysaid reading elementsand' said key elements, for indicating a movementof an element of either set out of alignment without accompanyingcoextensive parallel movement in the same directionof the correspondingelement in the other set.

2. The invention set forth in claim 1 in which the elements of each pairof engaging-elements comprising a reading, element and a; correspondingkey element are configured at their areas of engagement to eiTectmovementof one in a direction transverse to the movement of the other,when either moves out .of alignment without accompanying coextensiveparallel movement of the other in the same direction.

3. In a verifying machine, a row of aligned I reading elements, arow ofaligned key elements, arranged in parallel juxtaposition, with each keyelement opposite a reading element, record controlled means for shiftinga reading element out of alignment in its row, key controlled means forshifting a key element out of alignment in. its row, control means forcausing both shifting actions to be effected concurrently and to thesame extent to maintain the relative positions of opposed reading andsensing elements, cam means on the elements of one row, means controlledthereby upon shifting of an element in either row without concurrentshifting of the related element in the other row, for causing movementof an element in a direction transverse to the direction of shifting,and indicating means controlled by the transversely moved element.

4. In a verifying machine, a slide, a finger spring-pressedthereagainst, said slide having a projection thereon to hold the fingera predetermined distance from the slide, means for shifting the slideand the finger concurrently and to the same extent, so that the slideand finger maintain their point of contact, record controlled means fordetermining whether .the slide is to shift, key controlled means fordetermining whether the finger is to shift, whereby either the slide orfinger or both may shift with said shifting means, said projection beingeffective when either the slide or the finger shifts withoutaccompanying shifting of the other, for enabling the finger to movetoward the slide, and indicating means actuated by the finger upon suchmovement.

5. In a verifying machine, record card advancing means, an escapementmechanism therefor, said card having columns of designation receivingpositions, a plurality of keys, record sensing means, means effectiveupon operation of a key for causing said escapement mechanism to advancethe card to present a. column to the sensing means, further meansjointly controlled by the key and said sensing means for comparing thekey with the designation in the column presented and means controlled bythe comparing means upon a disagreement, for rendering further keyoperation ineffective for a predetermined time interval. I

6. The invention set forth in claim .5 in which key locking means isprovided and rendered effective by said comparing means to lock the nextfollowing key in operated position, if such' key is operated during saidpredetermined time interval.

7. In a verifying machine having card advancing means, sensing means,keys, comparing means jointly controlled by said-sensing means and keysto effect a comparison between a key operated and data sensed, incombination with control devices rend'eredefiective upon each keyoperation to cause said advancing means to first advance the card .topresent a column thereof to the sensing means, and then render thecomparing means effective, means controlled by the comparing means upondisagreement, for preventing the operation of the advancing means forthe next key operation, to. render only the comparing means effectivefor said next key, whereby the same column will be reverifiedf 8. In amachine dealing with record. cards having columns of data designatinpositions, the combination of means for verifying the data designationsand including a row of data sensing. elements and keys for selectivelycooperating with said elements to verify the designations; recordadvancing means, escapement mechanism therefor, operation of a keycausing operation of said escapement mechanism to present a card columnto said sensing elements, means jointly controlled by said keys andelements and efiec tive when a key depressed disagrees with thedesignations in the column advanced and sensed, for preventing operationof the escapement mechanism by the next key depressed, means controlledjointly by said keys and elements and effective when a second key isvdepressed, following depression of a non-agreeing key, and said secondkey agrees with the designations in the columns sensed for disablingsaid preventing means, whereby the third key depressed Will causeoperation of the escapement mechanism to present a second column to thesensing elements.

9. In a machine dealing with record cards having columns of datadesignating positions, the combination of means for verifyingthe datadesignations and including a row of data sensing elements and keys "forselectively cooperating with said elements to verify the designations,record advancing means, escapement mechanism therefor, operation of akey causing operation of said escapement mechanism to present a cardcolumn to said sensing elements, means jointly controlled by said keysand elements and effective when a key depressed disagrees with thedesignations in the column advanced and sensed for preventing operationof the escapement mechanism by the next key depressed, means controlledjointly by said keys and elements and effective when a second key isdepressed, following depression of a non-agreeing key and said secondkey also disagrees with the designations in the column sensed, formarking the column sensed, and further means jointly controlled by saidkeys and elements for disabling said preventing means, whereby the thirdkey depressed will cause operation of the escapement mechanism topresent a second column to the sensing elements. U

10. In a machine dealing with record cards h'aving columns of datadesignating positions, the combination of means for verifying the datadesignations and including a row of data sensing elements and keys forselectively cooperating with said elements to verify the designations,record advancing means, escapement mechanism therefor, operation of akey causing operation of said escapement mechanism to present a cardcolumn to said sensing elements, means jointly controlled by said keysand elements and effective when a key depressed disagrees with thedesignations in the column advanced and sensed for preventing operationof the escapement mechanism by the next key depressed, further meanscontrolled thereby for providing a continuous visible signal and anaudible signal for a predetermined time interval, means controlledjointly by said keys and elements and effective when a second key isdepressed, following depression of a non-agreeing key, and said secondkey agrees with the designations in the columns sensed for disablingsaid preventing means, and further means controlled thereby fordisabling said signal.

11. In a machine of the class described, in combination, means foranalyzing the designations in the columns of a recordcard, associatedkey operated means for verifying the analyzed designations column bycolumn, a first punch, and controlling means for actuating said punch tomake a notch in the margin of a non-verified column, a second punch, andcontrolling means for actuating said second punch to make a notch in anadjacent margin upon verification of all the columns analyzed, andinterlocking means for rendering said last named controlling meansineffective as an incident to the operation of said .rst punch in anon-verified column.

12. In a verifying machine, means for sensing designations in indexpoint positions of a column of a record card, means for moving the cardpast said sensing means column by column, a series of keys, one for eachindex point position, means jointly controlled by said sensing means andsaid keys for verifyin the designations in the columns, a presettablecontrol device, means operated by said verifying means uponnon-verification of a column for initiating a skipping operation of saidcard moving means, and means controlled by said presettable controldevice for continuing said last named operation and terminating the sameat a predetermined subsequent columnar position of the card.

13. In a verifying machine, means-for sensing designations in indexpoint positions of each of a plurality of successive column of a recordcard, constituting a field, means for moving the card past said sensingmeans column by column, means jointly controlled by said sensing meansand said keys for verifying the designations in the columns of thefield, a control card, movable with the record card, and means jointlycontrolled by said verifying means and said control card uponnon-verification of any card column in said field for causing saidmoving means to ad- Vance the remaining columns past the sensing meansand for causing suppression of the sensing of such columns.

14. The invention set forth in claim 13 in which further means iscontrolled by said verifying means and efiective upon non-verification,for making a mark in the column of the field in which thenon-verification occurred.

ELLIOTT W. GARDINOR. RAYMOND E. CHENEY. LORIN T. BLEUER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,013,534 Campbell Sept. 3, 19352,055,186 Thomas Sept. 22, 1936 2,078,084 Lasker Apr. 20 1937 2,315,741Shafer Apr. 6, 1943 2,528,438 Keen Oct. 31, 1950

